Hire a property manager and bookkeeper (if buying one SFH, I personally don't think a bookkeeper is needed at this point until you have multiple properties).

I wouldn't do multiple strategies at once.

I'm actively purchasing multiple properties and would like to leverage hard money loans with terms typically ranging from 1.5 to 2 years.My primary focus is on securing financing that aligns with my investment goals while ensuring that the rates and terms are the most favorable.

Do the advantages of state-specific expertise offset the added complexity of having multiple CPAs?   

I couldn’t agree more—having a checklist really is a lifesaver, especially when juggling multiple aspects of a deal.

I got maybe half a dozen in total, some of the same names multiple times, and I went and looked at the houses that were being cared for by the different people.

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

It will be important that you make enough income so you're able to qualify for multiple conventional loans with your DTI ratio. 

Multiple, billion dollar companies are investing heavy in our area, such as Intel, Google, and Amazon.

I highly recommend with ANY GC... call multiple reference AND double check the license/ROC number they give you.